Hoisting tower



Dec. 29, R. V. PAYNE HOISTING TOWER Filed Dec. s, 1955 s sheets-sheet V1 ATTORNEY WITNESS Dec. 29, 1936. R, v PAYNE v 2,066,221

HOISTING TOWER Filed Dec. 5, 1955 3 Sheets-Sheet 2 ATTORNEY` Dec. 29, 1936.- R. v. PAYNE 'oIsTING TOWER Filed Deo. s, 19:55

s sheets-Sheet :s

INVENTOR Miu/;-

Bv W..

WITNESS Patented Dec. 29, 1936 UNITED STATES eATEri-r ortica 5 Claims.

The invention relates to a hoisting tower set up and more especially to a quick erecting and knock-down tower or scaffold.

The primary object of the invention is the provision of a tower or scaifold of this character, wherein a vertically movable workmens platform or deck cage is arranged so that the same is susceptible through a motor drive of being raised or lowered and in this manner in the erection or taking down of a tower or scaffold for hoisting purposes eliminates the necessity of workmen subjecting themselves to hazardous climbs as is ordinarily required with the temporary scaffolding or hoisting tower now employed in edifices under construction, the set-up or knock-down of the scaffold or tower being had with rapidity and without requiring the workmen to assume dangers as would be required in the ordinary scaffold or tower erection.

A further object of the invention is the provision of a scaffold or tower, wherein the construction thereof is novel in form so that when in Ythe knock-down condition it can be convenientlyand easily transported tol the location required for .its service and also is susceptible of being erected with dispatch and without requiring the workmen to assume dangers or hazardous positions in the erection or knocking down of the scaffold or tower.

A still further object of the invention is the provision of a scaffold or tower of this character, which is comparatively simple in construction, readily and easily assembled and disassembled, strong, durable, susceptible of raising to the required height for service in the erection `of buildings or the like and inexpensive to manufacture and install.

With these and other objects in view, the in,- vention consists in the features of construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated in the accompanying drawings, which disclose -the preferred embodiment of the invention and pointed out in the claims hereunto appended.

In the accompanying drawings:

Figure 1 is a side elevation of a scaffold or tower constructed in accordance with the invention and at the initial stage of erection.

Figure 2 is a fragmentary enlarged Vertical transverse sectional View through the scaffold or tower.

Figure 3 is a top plan view of the workmens platform or cage.

Figure 4 is a fragmentary horizontal sectional view showing in detail the manner of securing the traveling cage vor platform as included in the scaffold orv tower.

Figure 5 is a vertical sectional view taken .centrally through Figure 4.

Figure 6 is Va fragmentary sectional view showing in detail' the driving connections of the cage or platform. l. 4

Similar reference characters indicate corre-` sponding partsithroughout the several views in the drawings. y l() Referring tofthe drawings in detail, the scaffold or tower of the` character constituting the pres'ent'inv'ention comprises a base I0 which is of the required size-,and length and at one end thereof has 'fixed therein` the lVertical corner l5 posts II of the lowermost portions of a tower or scaffoldjthese postsbeing'made up of a series of separable sections 'I2 having the overlapped jointswI3 which arefs'eparably held together by removable fasteners Il,thev joints I3 of the respective posts lI I` being located in staggered relation to :each other throughout the height of the scaffold or tower. Thejposts in their vertical' position are spacedthe required distance from each other and lie, perpendicular one to i2- the other. By'employing' the required number ofsections I these posts can rise to any desired heightaboye ythe base I by the fastening of such sections vtogether at the' joints I3.

It is preferable to havev secured'externally to theposts II the horizontalcross braces `Ill and 0 diagonal crossed braces I6' to give rigidity and strength to vth'etower or scaifold onerection thereof.

` Arranged for vertical travel within the scaffold 35 or tower between the posts Il is a workmens cageor double platform Il and I8, respectively, In these platforms inthe arrangement thereof, one superposed with respect to the other, there are corner Aspacer pieces I 9 which are' united 40 .with the isaid platforms I1 and I8 so that the platform I3 is suspended beneath the platforml'l.Y

Arranged between the-platforms II and I8 next to the corner pieces I9 thereof are vertical runs of Vendless sprocket chains 2l), these being trained over sprocket gears 2l, the uppermost of the said gears 2| being common to and fixed on driven shafts 22, thesebeing fitted with Worm pinions or gears 23 which mesh with worm screws 24 on adriving shaft`25 carrying a beveled gear 26 meshing with va companion gearKZ'I upon a stud journal 28 this carryinga gear 29 for meshing;v engagement witli'a drivinglgear 29 slidably splined or keyed at 30 'upon the power shaft 3| of an electric motor 82 xed to and suspended from the under side of the uppermost platform I1. The gear 29 is shifted by a throw'lever 33 accessible above the platform I1 for alternate engagement with gears34 operating independent windlasses 35,' these being suitably journaled beneath the platform I1 and supported in any .suitable manner. VIt is.- of course, understood that but a single windlass operates at a, time and adapted to be trained on and untrained from these windlasses 35 are the cables 36 and 31, respectively, associated with a swinging craneV 38 carried upon a crane post 39- which is connected to braces 40 therefor. The post 39 and braces 40 are secured to and rise from the platform I1. The hoisting cable 31 functions as ashoisting cable while the cable 36 functions as a raising and lowering cable for the crane 38. The'throw lever 31 rises above the platform I1 and is manually operated for the shifting of the ,gearn 29 lto bring the same. into position for.driving the windlasses 35 independently `oi eachother.

The hoisting cable 31. carries at its freeend a Y `suitable work harness 4I for the hoisting. of ma- A doorway 42 is provided in the platform v'I1 ing. of the tower or scaffold, one sectionIZ being Y held .within the harness 4I vas carried by the hoisting cable 31. Y

and to .which leads a vertical ladder.43 from the lowermostV platform I8 so that workmen upon this lowermost platform can ascend the` ladder 43to occupy the platform I1 as may be required or vice versa. Each windlass 35has as a part of its equipment a braking device 44. .s Y

L'Engageable through selected links 45Y of the endless chains 20 are holding pins 46, each `threaded at 41 tofseparably engage in ian internally threaded keeper socket 48 built in the facing 49 of each section I2Vofrthe post II of the scaffold ortower so that the united upper and lower platforms I1 and I8 constituting a. travel cage can be held stationary at determined heights` within the scaffold or tower. When it is required that theseplatforms I1 and I8 are tomove in unison as a .cage upwardly` within the scaffold or tower,\it is necessaryA toremove the lowermost pins 46' from thesockets 48 as engaged through the links 45V of the chains 28,

leaving the uppermost pins.V 46 engaged and on the 'shifting of the gear 29 with the gear 28 the motor 32 will drivethe said chains 20 in a direction that the platforms I1 and I8 shall"move upwardly approximately the distance between thesprocket wheels 2| overwhichv the said chains 'Zlifa'retrained whereupon those pins 46 being located lowermost, will be inserted through the links. 45 of the chains Yto engage the sockets 48 at .the uppermost portions of said chains so that both the upper and lowermost pins now engaged with the'sockets 46 will 4hold fast the platforms I1 vand I8 -in their raised or elevated position. Thus it will be seen that the platforms I1 and I8 will have step travel in the scaffold or tower and for the lowering of these platforms the said pins are inversely manipulated.

Operating WithinV the tower or scaffold between its posts II is a lift 58, it being raised'and lowered by a cable 5I trained over guide pulleys 52 as carried by the upper platform I1 fand a pulley 53 on the base Il), the cable 5I being adapted'for winding on and unwinding from a windlass 54 driven from anelectric motor 55 upon `fold or tower.

said base I0. This lift is for the bringing of y wise the trackage for the lift 50 until such tower "or scaffold is low in height to approximate that as shown in Figure 1 of the drawings and in this condition the same with the base Ill can be placed upon a truck or other vehicle for the `convenient transportation thereof to the place foremployment of the same.

The location of the outer stretches of the endless. sprocket chains 20 places the same parallel with and next to the posts II vso that the pins 46 Acan be engaged with the sockets 48 for making fast the cage including the platforms I1 and I8 at any level within the tower or scaffold. The lift 58 operates independently. of the cage includingV the platforms .I1 and I8.

The. crane 38 withQits hoisting cable 31Hcan be utilized for the lifting of materials or other supplies as required by the workmen when riding thescage having said platforms I1 and I8. At the beginning of the operation the cage'having the platforms I1y and I8 when in lowermost positionwill beclose to the base I0 so that workmen can readily and easily climb into the cage onto its `lowermost platform I8 and from there said cage.

The cable L36 istrained overvguide pulleys 51 as properly arranged to permit the raisingand beingdriven from theY motor 32. The construe# tion off the scaffold or hoist withthe movable lowering ofthe crane 38both cables 36 and 31 cage therein enables the erecting and the knockv -ing down.of such scaffold or hoist with rapidity `and without requiring the workmen to be subjected to hazarduous positions forv the erection or knocking downl operations or for ascending or descendingv such scaffold or tower in carrying forth work` on an edifice or building under construction. M A s Itk is, `of course,V understoodvjthatr the bracing, reinforcing or strengthening of the scaffoldor tower can be effected in any desirable manner without hindrance to the setting up or knocking down thereof with dispatch and without excessive labor on the part of operatives or workmen. l n

The pieces I9 adjoining the platforms I1 and I8 are rigidly secured in place and are components of the `cage movably fitting the scaffold or tower. The braking device 44 is of the hand controlled type and the control lever .thereof is indicated In the platform I1 there is provided an opening 65B to afford a clearance for the cables 36 and 31 to and from the windlasses 35 in the Working of the same.

What is claimed is: y

1. A tower of the character described comprising a base, corner posts rising from said base and composed of separably joined sections, a cage arranged between the posts and including superposed platforms, shiftable means carried by the cage and detachably engageable with the posts, means on one of the platforms for operating the said shiftable means, and means removably fitting the rst-named means and selectively engageable with the posts for rendering the said firstnamed means active or inactive.

2. A tower of the character described comprising a base, corner posts rising from said base and composed of separably joined sections, a cage arranged between the posts and including superposed platforms, shiftable means carried by the cage and detachably engageable with the posts, means on one of the platforms for operating the said shiftable means, means removably fitting the rst-named means and selectively engageable With the posts for rendering the said first-named means active or inactive, and means carried by the cage for affording access from between said platforms thereof.

3. A tower of the character described comprising a base, corner posts rising from said base and composed of separably joined sections, a cage arranged between the posts and including superposed platforms, shiftable means carried by the cage and detachably engageable With the posts, means on one of the platforms for operating the said shiftable means, means removably fitting the rst-named means and selectively engageable with the posts for rendering the said first-named means active or inactive, means carried by the cage for aording access from between said platforms thereof, and breaking means for the second-named means.

4. A tower of the character described comprising a base, corner posts rising from said base and' composed of separably joined sections, a cage arranged between the posts and including superposed platforms, shiftable means carried by the cage and detachably engageable with the posts, means on one of the platforms for operating the said shiftable means, means removably fitting the first-named means and selectively engageable with the posts for rendering the said first-named means active or inactive, means carried by the cage for affording access from between said platforms thereof, braking means for the secondnamed means, and a control for the said secondnamed means.

5. A tower of the character described comprising a base, corner posts rising from said base and composed of separably joined sections, a cage arranged between the posts and including superposed platforms, shiftable means carried by the cage and detachably engageable with the posts, means on one of the platforms for operating the said shiftable means, means removably fitting the first-named means and selectively engageable with the posts for rendering the said first-named means active or inactive, means carried by the cage for affording access from between said platforms thereof, braking means for the secondnamed means, a control for the said secondnamed means, and horizontal and crossed diagonal brace means for said posts and removably engaged therewith.

RALPH V. PAYNE. 

